Gauge device



A. R. Koos GAUGE DEVICE Filed Feb; 8, 1950 April 1s, 1933.

INVENTOR @m d GMW' ATTORNEY Patented Apr. 18, 1933 uNireD STATES- ARENDT R. KOOS, OF ELIZABETH, `N'E JERSEY GAUGE DEVICE Application med FebiaryY 8,1930. seriaino. 426,911.

following description illustrated by the ac-l companying drawing, in which Fig. 1 is a longitudinal sectional view of the gauge device;

F ig. 2 is a plan view of the spiral threads showing the gauge pins; and p Fig. 3 is an end elevation ofthe gauge de-V vice showing the dial and indicator.

In the drawing, reference numerals 1, 2 15 and 3 designate sections of a shaft which are disposed in abutting relation and are prevented from relative rotation by the offset end portions 4. The sections of shaft are fastened together by set screws or the like (not 20 shown) to prevent relative axial or radial movement. The shaft is provided with an enlarged end or head 5 having spiral threads on the face thereof.

The shaft is adapted to be rotated in a 25 sectional housing or tubular member. The housing comprises tubing sections 7, 8 and 9. Adjoining sections are connected together by a sleeve having a portion 10 affixed to one section and having an enlarged portion 11 overlapping the adjoining section in spaced relation thereto. A collar 12 is disposed between the enlarged portion 11 of the sleeve and the tubing section. A shoulder 13 on collar 12 constitutes a bearing for the shaft. The collar is prevented from rotation with respect to enlarged portion 11 by means of a key 14 and their relative position axially is maintained by means of set screw 15. A washer 16 is disposedbetween the shoulder 13 and the sleeve.

The housing is provided with an end cover "PATENToFFlcE by a sleeve identical with that previously described and provided withthe cooperating collar 12, key 14, set screw 15 and washer 16 previously described. The end face is cov,- ered by a dial 22. The shaft carries a pointer 23 whichV in turn bears a handle 24. Byrotating the shaft the-gauge pins are fed out or are withdrawn and their position isl registered by the pointer upon the dial.l

The device is 'easily operated and itsparts are so enclosedl as to prevent the movable parts from coming out of adjustment. It -is particularly adapted for'measuring the internal `diameter of elongated tubes. In the gauging'of cracking coil tubes, for example,

thedevice has given excellent service, due to its accuracy and ease of handling. The sec'- tionsvof shaft and housingv being readily detachable, the'handle can be readilyV shortened or lengthened'bygremoving or adding, 'h

respectively, sections of the shaftV and housing and the device'thereby rendered service# ablei for measuring the internal diameterV of short'orV long tubes.'` p

Various changes maybe made within the scope ofthe appended claims in which it is desired to claim all novelty inherent in the invention as broadly as the prior art permits.

1. A gauge device for measuring inside diameters, comprising a shaft, an indicator at one end thereof, a tubular member rotatably receiving the shaft, one end of said member having a dial cooperating with the indicator, the opposite end of the shaft being provided with an enlarged face carrying spiral threads, the opposite end of the tubular member enclosing the enlarged face and provided with radial ways facing the threads, and gauge pins slidableV inthe ways Y and engaging the threads.

2. A gauge device for measuring inside diameters, comprising a sectional shaft, an 1ndicator at one end thereof, a sectional tubularfmember rotatably receiving the shaft and having at one end a dial cooperating with the indicator, the'opposite end of the shaft being provided with an enlarged face carrying spiral threads, the opposite end of the tubular memberenclosing the enlarged face and provided With radial Ways facing the threads, and gauge pins slidable in the Ways and each having an extended portion engaging With the threads.

3. A gauge device for measuring inside diameters, comprising a rotatable shaft, an enlarged face at one end thereof and carrying spiral threads, an expansible pin mechanism comprising a block having radial guide Ways therein, pin-carrying members slidable in the guide Ways and having extended threaded portions engaging With the threads Y ,s on the face, and means for indicating the exe' tent of movement of the pins When the shaft is rotated.

4. Apparatus according to claim 3, in which the shaft is constructed in sections to facilitate measurements in long tubes,rand a sectional housing is provided around the shaft.

5. A gauge device for measuring the inside diameter of long tubes, comprising a shaft formedy of readily detachable sections, a housing for said shaft formed of readily detachable tubular sections and in Which the shaft is adapted to rotate,` an enlarged face carrying spiral threads on Vthe end of the shaft which is to be introduced into the tube to be gauged, a block carried by said housing and having radial 'guideways opposed to the face, pin-carrying members slidably mounted in the guideWays and having threads engaging they threads on the face, an indicator on the exposed end of the shaft, a dial carried by the exposed end of the tubular housing over which the indicator is adapted to move, whereby a remote indication is ob` tained of the insidediameter of the tube' at an extended distance from the point at Which the reading is made.

ARENDT R. KOGS. 

